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參數(shù)資料
型號(hào): LTC2851MPDD#PBF
廠商: Linear Technology
文件頁(yè)數(shù): 16/18頁(yè)
文件大?。?/td> 0K
描述: IC TXRX RS485/RS422 20MBPS 8DFN
標(biāo)準(zhǔn)包裝: 121
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 8-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 8-DFN-EP(3x3)
包裝: 管件
LTC2850/LTC2851/LTC2852
285012fd
Figure 5. Driver Enable and Disable Timing Measurements
DRIVER
DI
VCC
OR
GND
OR
VCC
OR
GND
RL
CL
285012 F05a
Y
Z
DE
CL
tZLD,
tZLSD
tZHD,
tZHSD
tHZD,
tSHDN
tLZD
1/2 VCC
DE
Y OR Z
Z OR Y
VCC
VOL
VO
VOH
0V
0.5V
285012 F05b
Figure 6. Receiver Propagation Delay Measurements
TesT circuiTs
A
B
VCM
±VAB/2
RO
CL
285012 F06a
RECEIVER
tPLHR
tPHLR
90%
0
90%
10%
tR
90%
10%
tF
tSKEWR = |tPLHR – tPHLR|
90%
1/2 VCC
tRR
tFR
10%
285012 F06b
10%
VAB
VCC
VO
0
–VAB
RO
A-B
A
B
0V OR VCC
VCC OR 0V
RO
RE
CL
DI = 0V OR VCC
RL
VCC
OR
GND
285012 F07a
RECEIVER
tZLR,
tZLSR
tZHR,
tZHSR
tHZR
tLZR
1/2 VCC
RE
RO
VCC
VOL
VO
VOH
0V
0.5V
285012 F07b
Figure 7. Receiver Enable/Disable Time Measurements
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